I have four +10% crafting bangboos now.
Believe it or not, the Type iii is rare as fuck, but it was actually the first of my 4 electroboos I acquired.

And I acquired it back when I didn't even notice it had a Type iii tag.
Plus, there were TWO electroboos up for sale, chances are extremely high the other Electroboo was the basic Type i.
And if I had coincidentally grabbed that one, I would have never been able to discover how awesome Electroboo is.